71768866 has 32 divisors (see below), whose sum is σ = 123364080. Its totient is φ = 31021056.

The previous prime is 71768857. The next prime is 71768869. The reversal of 71768866 is 66886717.

It can be written as a sum of positive squares in 8 ways, for example, as 55130625 + 16638241 = 7425^2 + 4079^2 .

It is not an unprimeable number, because it can be changed into a prime (71768869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175270 + ... + 175678.

Almost surely, 2^71768866 is an apocalyptic number.

71768866 is a deficient number, since it is larger than the sum of its proper divisors (51595214).

71768866 is a wasteful number, since it uses less digits than its factorization.

71768866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838.

The product of its digits is 677376, while the sum is 49.

The square root of 71768866 is about 8471.6507246227. The cubic root of 71768866 is about 415.5711225015.

The spelling of 71768866 in words is "seventy-one million, seven hundred sixty-eight thousand, eight hundred sixty-six".